Why does each element have its own pattern of spectral lines?

Answer 1

Hmm, could be because different elements have different number of protons. The more protons you have the smaller your energy level gaps will be. Or if you like, the more protons there are the more the electons will be pulled towards the nucleus. Therefore the radius of the atom will decrease. The Energy emitted when an electron changes energy levels is proportional to the number of protons square. SO each element will have a different number of protons with different energy level gaps and therefore different spectral emittance

Answer 2

actual: The spectra will count on the configuration of electrons in that distinctive component. because of the fact the configuration relies upon on the two the variety of electrons AND protons in it, this gives you a different spectra for each component, besides as each and each ion of it. additionally, it may be observed that collectively as the customary trend is unique, guy or woman lines might ensue on the comparable wavelength as others.